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BIAS CIRCUIT TO STABILIZE OSCILLATION IN RING OSCILLATOR, OSCILLATOR, AND METHOD TO STABILIZE OSCILLATION IN RING OSCILLATOR
BIAS CIRCUIT TO STABILIZE OSCILLATION IN RING OSCILLATOR, OSCILLATOR, AND METHOD TO STABILIZE OSCILLATION IN RING OSCILLATOR
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机译:偏置电路,用于稳定环形振荡器中的振荡,以及振荡器和用于稳定环形振荡器中的振荡的方法
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摘要
Bias circuits to stabilize oscillation in ring oscillators, oscillators, and methods to stabilize oscillation in ring oscillators are provided. The ring oscillator includes a plurality of differential delay cells, each including a pair of input transistors, a pair of voltage-controlled resistors, and a common current source. The bias circuit includes a replica arm that includes a replica of one of the voltage-controlled resistors, and a resistor arm that includes a fixed resistor. The bias circuit supplies bias voltages to the differential delay cells such that ratio of voltage swing to bias current of the delay cell is kept constant by referring the ratio to the fixed resistor.
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